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प्रश्न
Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain.
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उत्तर
If we are in a dark room, we cannot see objects in the room. However, objects outside the room are visible to us. An object becomes visible when light reaches our eye after being reflected from the object. If there is no light in the room, then the objects inside the room cannot reflect any light. Hence, we cannot see in a dark room. If there is light present outside the room, then we can see the objects outside the room.
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संबंधित प्रश्न
Explain the following term:
Reflected ray. Draw diagram/diagrams to show them.
Explain the following term:
Angle of reflection. Draw diagram/diagrams to show them.
With the help of diagrams, explain the difference between the regular and irregular reflection.
Out of the following, choose the substance which is translucent medium:
The angle between an incident ray and the mirror is 350.
(i) What is the angle of incidence?
(ii) What is the angle of reflection?
(iii) What is the total angle turned by the ray of light?
(iv) What is the angle between the incident and the reflected rays?
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.

What is reflection of light?
An object that blocks all of the light from passing through is ______.
Materials which reflect the light well are called ______.
Play with a mirror
Write your name with a sketch pen on a thin sheet of paper, polythene or glass. Read your name on the sheet while standing in front of a plane mirror. Now look at your image in the mirror.
